Obliczanie częstotliwości drgań własnych modyfikowanych tarczowych elementów konstrukcji z wykorzystaniem metody aproksymacji połączonych

Abstract

In the paper combined approximations (CA) hybrid method was proposed as effective reanalysis approach for computation of natural frequencies of the modified shear structure. CA procedure is applied in case of the same number and in case of increasing number of degrees of freedom in structure after modification. It was proved that CA method gives significant reduction of the computational effort for the evaluation of the natural frequencies of vibrations of the modified structure with no greater decrease of the accuracy.